GB2143344B - Optical information reading apparatus - Google Patents

Optical information reading apparatus

Info

Publication number
GB2143344B
GB2143344B GB08410724A GB8410724A GB2143344B GB 2143344 B GB2143344 B GB 2143344B GB 08410724 A GB08410724 A GB 08410724A GB 8410724 A GB8410724 A GB 8410724A GB 2143344 B GB2143344 B GB 2143344B
Authority
GB
United Kingdom
Prior art keywords
optical information
reading apparatus
information reading
optical
reading
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB08410724A
Other versions
GB8410724D0 (en
GB2143344A (en
Inventor
Hitoshi Kanamaru
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pioneer Corp
Original Assignee
Pioneer Electronic Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Publication of GB8410724D0 publication Critical patent/GB8410724D0/en
Publication of GB2143344A publication Critical patent/GB2143344A/en
Application granted granted Critical
Publication of GB2143344B publication Critical patent/GB2143344B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B19/12—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/095—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following specially adapted for discs, e.g. for compensation of eccentricity or wobble
    • G11B7/0956—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following specially adapted for discs, e.g. for compensation of eccentricity or wobble to compensate for tilt, skew, warp or inclination of the disc, i.e. maintain the optical axis at right angles to the disc
GB08410724A 1983-04-27 1984-04-26 Optical information reading apparatus Expired GB2143344B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1983063397U JPS59168835U (en) 1983-04-27 1983-04-27 Optical recording information reading device

Publications (3)

Publication Number Publication Date
GB8410724D0 GB8410724D0 (en) 1984-05-31
GB2143344A GB2143344A (en) 1985-02-06
GB2143344B true GB2143344B (en) 1986-07-02

Family

ID=13228127

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08410724A Expired GB2143344B (en) 1983-04-27 1984-04-26 Optical information reading apparatus

Country Status (4)

Country Link
US (1) US4634853A (en)
JP (1) JPS59168835U (en)
DE (1) DE3415802A1 (en)
GB (1) GB2143344B (en)

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JPS609018U (en) * 1983-06-24 1985-01-22 パイオニア株式会社 Optical recording information reading device
AU575332B2 (en) * 1983-07-29 1988-07-28 Sony Corporation Optical disk pick-up
JPS60123763U (en) * 1984-01-30 1985-08-21 パイオニア株式会社 Recorded information reproducing device
DE3503461A1 (en) * 1984-02-03 1985-08-08 Pioneer Electronic Corp., Tokio/Tokyo DEVICE FOR PLAYING BACK STORED INFORMATION
JPS60155017U (en) * 1984-03-24 1985-10-16 パイオニア株式会社 Optical information reader
US4782474A (en) * 1985-01-31 1988-11-01 Fujitsu Limited Tracking servo system for controllably projecting an optical beam on an optical disk
NL8500592A (en) * 1985-03-04 1986-10-01 Philips Nv ELECTRO-OPTICAL DEVICE.
JPS61211846A (en) * 1985-03-18 1986-09-19 Pioneer Electronic Corp Pickup device in optical information recording and reproducing device
NL8501665A (en) * 1985-06-10 1987-01-02 Philips Nv OPTICAL SCANNER WITH POSITION AND POSITION DETECTION SYSTEM FOR AN ELECTROMAGNETICALLY BEARING OBJECTIVE.
JPH0660811B2 (en) * 1985-09-24 1994-08-10 ソニー株式会社 Reflective tilt detector
DE3640660A1 (en) * 1985-11-28 1987-06-04 Toshiba Kk DEVICE FOR DETERMINING THE POSITION OF A LENS
EP0225564A3 (en) * 1985-11-30 1988-07-06 Kabushiki Kaisha Toshiba Optical head
JPH0619845B2 (en) * 1986-09-26 1994-03-16 ティアツク株式会社 Disk fluctuation state detection device
JPS63257925A (en) * 1987-04-15 1988-10-25 Nippon Coinco:Kk Detecting device for focus control signal of optical head
JPS63268130A (en) * 1987-04-24 1988-11-04 Mitsubishi Electric Corp Photodetector adjusting mechanism
JP2656036B2 (en) * 1987-05-20 1997-09-24 キヤノン株式会社 Light head
US5010538A (en) * 1987-05-25 1991-04-23 Oki Electric Industry Co., Ltd. Focus servo apparatus
JP2565238B2 (en) * 1987-10-15 1996-12-18 ソニー株式会社 Optical disc player
US5124973A (en) * 1988-02-04 1992-06-23 Pioneer Electronic Corporation Tilt control mechanism
US5107478A (en) * 1988-06-07 1992-04-21 Yamaha Corporation Tilt device for an optical head
DE68923833T2 (en) * 1988-06-20 1996-06-13 Mitsubishi Electric Corp Optical head with tilt correction servomechanism.
JPH0713056Y2 (en) * 1988-11-15 1995-03-29 ヤマハ株式会社 Optical disc tilt sensor device
US5058097A (en) * 1989-02-27 1991-10-15 Pioneer Electronic Corporation Slider controller for disk player including a slider which is driven by a linear motor
JPH02232820A (en) * 1989-03-06 1990-09-14 Pioneer Electron Corp Player for reproducing double-sided disk
JP2747332B2 (en) * 1989-07-05 1998-05-06 三菱電機株式会社 Light head
JP2593941B2 (en) * 1989-08-19 1997-03-26 富士通株式会社 Actuator offset removal device for optical disk drive
US5412640A (en) * 1990-09-10 1995-05-02 Deutsche Thomson-Brandt Gmbh Method for measuring and regulating the radial and tangential angles of a light beam
DE4028703A1 (en) * 1990-09-10 1992-03-12 Thomson Brandt Gmbh METHOD FOR MEASURING OR CONTROLLING THE RADIAL AND TANGENTIAL ANGLE OF A LIGHT BEAM
JPH04167232A (en) * 1990-10-31 1992-06-15 Toshiba Corp Photodetector device
US5212374A (en) * 1991-12-04 1993-05-18 Photon Dynamics, Inc. Method and apparatus for positioning and biasing an electro-optic modulator of an electro-optic imaging system
US5387788A (en) * 1991-12-04 1995-02-07 Photon Dynamics, Inc. Method and apparatus for positioning and biasing an electro-optic modulator of an electro-optic imaging system
DE4211213C2 (en) * 1992-04-03 2001-03-15 Thomson Brandt Gmbh Control of optical scanning systems, especially in the start-up phase of the playback devices
US5430699A (en) * 1993-02-24 1995-07-04 Matsushita Electric Industrial Co., Ltd. Optical reading and writing device
JP3337538B2 (en) * 1993-11-01 2002-10-21 パイオニアビデオ株式会社 Optical disk inspection method
JPH07140381A (en) * 1993-11-18 1995-06-02 Sony Corp Method for correcting coma aberration
JPH07272300A (en) * 1994-03-31 1995-10-20 Sony Corp Skew detecting device for disk
US5991249A (en) * 1997-07-29 1999-11-23 Hoetron, Inc. Optical track sensing device
JP2003022579A (en) * 2001-07-10 2003-01-24 Pulstec Industrial Co Ltd Device and method for initializing optical disk
US6723980B2 (en) 2001-07-16 2004-04-20 Wai-Hon Lee Position sensor with grating to detect moving object with periodic pattern
JP2003317287A (en) * 2002-04-18 2003-11-07 Ricoh Co Ltd Tilting detector, optical pickup and optical disk unit
TWM256947U (en) * 2004-03-09 2005-02-11 Lite On It Corp Electronic apparatus with level detecting function
JP4555721B2 (en) * 2005-04-06 2010-10-06 シャープ株式会社 Optical disk device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2309888A1 (en) * 1975-04-30 1976-11-26 Thomson Brandt OPTICAL PROJECTION DEVICE AND OPTICAL READER INCLUDING SUCH A DEVICE
JPS5953612B2 (en) * 1975-11-19 1984-12-26 カブシキガイシヤ フジテレビジヨン Kodenshikisai Seihouhou
GB1577132A (en) * 1976-03-19 1980-10-22 Rca Corp Compensation apparatus for a servo system with periodic command signals
JPS5647933A (en) * 1979-09-25 1981-04-30 Sony Corp Optical signal head
US4381557A (en) * 1980-12-19 1983-04-26 Rca Corporation Optical focus sensor
JPS57179954A (en) * 1981-04-27 1982-11-05 Sony Corp Optical type disc player
JPS57186237A (en) * 1981-05-12 1982-11-16 Pioneer Video Corp Crosstalk eliminating device for recorded information reproducing device

Also Published As

Publication number Publication date
JPS59168835U (en) 1984-11-12
GB8410724D0 (en) 1984-05-31
DE3415802A1 (en) 1984-11-22
JPH0516647Y2 (en) 1993-05-06
GB2143344A (en) 1985-02-06
US4634853A (en) 1987-01-06

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Legal Events

Date Code Title Description
746 Register noted 'licences of right' (sect. 46/1977)
PE20 Patent expired after termination of 20 years

Effective date: 20040425